New Insights into Reaction Mechanism of Selective Ammonia Oxidation Catalyst in Diesel Aftertreatment Applications
Background Diesel and lean-burn engines are gaining in popularity, worldwide, due to their superior combination of fuel efficiency and power density, compared to other conventional sources of on-road propulsion, including gasoline engines or fuel cells. However, they face rapidly evolving environmental regulations, including those for oxides of nitrogen (NOx). Selective catalytic reduction of NOx with ammonia derived from urea (urea-SCR) is a technology increasingly used to meet the most stringent regulations. High-efficiency SCR systems, requiring occasional over-stoichiometric ammonia dosing, often necessitate the use of selective ammonia oxidation catalyst, commonly referred to as ammonia slip catalyst (ASC), to control ammonia slip to the environment. Reaction mechanism for highly efficient and selective ASCs, considered for practical applications, is complex and its understanding is only evolving.
Kamasamudram Krishna Yezerets Aleksey Chen Xu Currier Neal Chen Haiying Castagnola Mario Watkins Thomas
Cummins Inc., Corporate R&T, 1900 McKinley Ave., Columbus, IN 47201, USA Johnson Matthey Inc., Emission Control Technology, 436 Devon Park Drive, Wayne, PA 19087, USA Oak Ridge National Laboratory, Materials Science and Technology Division, P.O. Box 2008, Oak Ridge,
国际会议
6th International Conference on Environmental Catalysis(第六届国际环境催化大会 ICEC 2010)
北京
英文
22-22
2010-09-12（万方平台首次上网日期，不代表论文的发表时间）